I don't think there should be a deadline right now but perhaps a few words can be said about what we are looking for.
To make efficient use of the screen, I think the image should be about 80 pixels high, not much more than that, and about 800 pixels wide (not wider, and preferably not too much narrower). More like a banner really.
As far as I'm concerned, the style should be modern and bright, without being punky, avant-garde or high-tech, and the colours should be pleasing and coordinated, that is, no screaming primary or sickly sweet colors.
The logo should include the words as shown in Robert's example, the font being simple and classical (no curly or fantasy fonts).
The theme should include one or more musical images, of course with piano (and perhaps other keyboard instruments) being prominent.
I hope that is not too restrictive for all you budding artists out there. :